Bottle stopper with drip pipette secured thereto and extending into the bottle, and air admission



Febo 5, v P. WEICKEL BOTTLE STQPPER WITH DRIP PIPETTE SECURED THE'RETO AND EXTENDING INTO THE BOTTLE AND AIR ADMISSION Filed June 25, 1928 Fig .1.

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Patented Feb. 5, 1929.

PHILIP]? WEICKEL, OF COBLENZ, GERMANY.

BOTTLE STOPPER WITH DB1]? PIPETTE SIEKEURED THERETO AND EXTENDING INTO THE BOTTLE, AND AIR ADMISSION.

Implication filed June 25, 1928, Serial No. 288,147, and in Germany June 29, 1327.

This invention relates to a bottle closing device for drop glasses and like bottles.

The novel feature forming the subject matter of this invention consists in the admission of air to the upper opening of the pipette by means of a channel bent at an angle and ending in the side of the stopper so that the channel is closed by inserting the stopper into the bottle neck.

The upper edge of the pipette may be enlarged or provided with i a circumferential head for detachably securing the pipette in the stopper. The closing stopper is preferably made entirely from rubber and of such a form that the upper cylindrical portion ex- I tending into the neck of the bottle has a somewhat larger diameter than the lower portion, thus enabling the stopper to be tightly wedged into the neck of the receptacle, in an unyielding manner like a wad. The lower, somewhat thinner portion of the stopper ensures the central introduction into the neck of the bottle. To facilitate the complete emptying of the bottle the neck can be preferably arranged on the bottle inclined at an angle so that the lower end of the pipette can withdraw even the last drops of the contents. In this latter form of construction, the bottle is preferably made with a flattened portion designed to receive a label and to facilitate the handling. I

Several embodiments of the invention are illustrated, by way of example, in the. accompanying drawing of which Fig. 1 shows a drop-glass with drip arrangcinent.

Fig. 2 is a longitudial section.

Fig. 3 shows in side elevation the stopper alone. 1 I

Fig. t is a longitudinal section of Fig.

Fig. 5 shows in elevation a drop-glass with inclined neck.

6 is a cross section through Fig. 5.

The pipette a is secured at the upper end in the stopper 1) by means of a head-shaped enlargement so that the mouth of the pipette a joins the channel 0 in the stopper 2).

The pipette is preferably held in the stopper .7; somewhat elasticallyby theheadh. After removing the stopper 1), the air inlet orifice c is uncovered so that the atmospheric air exerts a pressure on the liquid contained in the pipette a, which under the pressure of the air flows out of the lower open end of the pipette. The stopper 6 can be made of rubber, cork, glass or other suitable material and fits in the neck of the glass cl.

The stopper Z; is preferably made entirely of rubber and of such a shape that the upper portion 7 extending into theneck of the container is somewhat thicker than the lower portion 9 in order to obtain a cylindrical porwithdrawn with the aid of the pipette, the

neck 72 of the bottle (Z can be arranged inchned at an angle, as shown in Fig. 5, so that the lower end of the pipette a can take up even the last drop. In the latter form of construction, the bottle can be advantageously provided with a flattened portion Z designed for a label and to facilitate handling in various instances. The bottle can, for example, be safely laid down on thefiattened portion 2'.

I claim 1. A drop-stopper for containers comprising an air admission channel bent at right angles so that the end of the horizontal arm of said channel is in the side wall of the stopper, and a pipette inserted into the lower end I of the vertical arm of said channel so that the air admission to said pipette is shutoff when the stopper is in the bottle neck.

2. A drop-stopper as specified in claim 1, in i which the pipette has a bead-like enlargement,

at the upper end by means of which it is sccurely held in the channel ofthestopper.

3. A stopper as specified in claim 1, in which the upper portion of the cylindrical stopper of larger diameter than the lower portion of the. same.

l. A bottle for a drop stopper as specified in claim 1=in which the neck is inclined at an angle'on the bottle body.

5. Abottle for a drop stopper as specified in claim 1 having a flattened portion designed to receive a label and to facilitate handling of the bottle.

In testimony wherof I afiix my signature.

PHILIPP wEIoKnL. 

